@article{FPM_2010_16_2_a6,
     author = {O. M. Omelyan},
     title = {On conditions of the coincidence of curvatures of the first and second types on distribution of planes},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {61--66},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2010_16_2_a6/}
}